a/c blows warm air when idles cold when running
This is an EVAP purge code - Possibly the purge valve or switch.
Not normally before a warm front, precipitation comes before and after a cold front. When you have warm air and a cold front comes through, you mix warm with cold and that brings precipitation.
Makes no difference if the engine is warm or cold. Just make sure the engine has not been run for at least 30 minutes before checking the oil level. This way you will get a very accurate reading. I normally check my oil level after the car has sat overnight.
My '06 5.7L idles pretty consistantly around 650 rpm when warm, slightly higher before the oil heats up.
It is normally warm in Portugal.
its your engine control module>>>JAC
Have vehicle scanned to determine problem and recover codes Could be a bad coolant temperature sensor
1994 Chevy suburban....no coolant leaks...but looses coolant is this an older car? does the car loose engine coolant?
id change the coolant temp sensor
I am not a pro, but mine broke the locating pin on the cam pully, which altered the cam timing. Luckily the valves do not touch the pistons! The engine was pulled and ready for rebuild when it was found. I rebuilt it anyway.
You may want to check for sticking throttle linkage/cable and also your ignition timing may be advanced